Holding the electric file at the wrong angle can cause what issue in the nails?

Holding the electric file at the wrong angle can create grooves in the nail due to uneven pressure and filing action. When the angle is not optimal, the file may not glide smoothly along the nail's surface, leading to indentations or uneven patterns. This not only affects the aesthetics of the nail but can also compromise the nail structure if grooves are deep.

Maintaining the proper angle helps ensure that the electric file shapes and smooths the nail evenly, preventing the development of these unwanted grooves. In contrast, peeling, discoloration, and weakening of the nail are less directly related to the filing angle and involve other factors or techniques. For instance, peeling might occur due to improper aftercare or exposure to harsh chemicals, while discoloration may arise from various sources, including nail polish or health issues. Weakening of the nail can result from over-filing or improper techniques, but grooves specifically are a direct result of angle misalignment with the electric file.